121-43-7
Product Name:
Trimethyl borate
Formula:
C3H9BO3
Synonyms:
Boric acid trimethyl ester;Methyl borate;Trimethyl borate
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CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Trimethyl borate appears as a water-white liquid. Denser than water. Vapors heavier than air. Used as a solvent and fungicide for fruit. |
|---|---|
| Color/Form | Colorless, moisture-sensitive liquid; fumes in air |
| Boiling Point | 67.5 °C |
| Melting Point | -29.3 °C |
| Flash Point | less than 80 °F (NFPA, 2010) |
| Solubility | Miscible with tetrahydrofuran, ether, isoporpylamine, hexane, methanol, nujol, and other organic liquids |
| Density | 0.915 g/cu cm |
| Vapor Density | 3.59 (Air = 1) |
| Vapor Pressure | 137.0 [mmHg] |
| LogP | -1.9 |
| Stability/Shelf Life | Stable in the absence of moisture. |
| Decomposition | The substance decomposes on heating or on burning producing toxic fumes including boron oxide. |
| Refractive Index | Index of refraction: 1.3568 at 20 °C/D |
| Kovats Retention Index | 593 |
| Other Experimental Properties | Stable in the absence of moisture; hydrolyzes in the presence of water to methanol and boric acid. ... Forms azeotrope with methanol: 70% trimethyl borate and 30% methanol |
| Chemical Classes | Metals -> Metalloid Compounds (Boron) |
SAFETY INFORMATION
| Signal word | Danger |
|---|---|
| Pictogram(s) |
 Flame Flammables GHS02  Skull and Crossbones Acute Toxicity GHS06  Health Hazard GHS08 |
| GHS Hazard Statements |
H225:Flammable liquids H319:Serious eye damage/eye irritation H370:Specific target organ toxicity, single exposure |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P310:IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
COMPUTED DESCRIPTORS
| Molecular Weight | 103.92 g/mol |
|---|---|
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 3 |
| Rotatable Bond Count | 3 |
| Exact Mass | 104.0644743 g/mol |
| Monoisotopic Mass | 104.0644743 g/mol |
| Topological Polar Surface Area | 27.7 Ų |
| Heavy Atom Count | 7 |
| Formal Charge | 0 |
| Complexity | 31.7 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 1 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
Trimethyl borate appears as a water-white liquid. Denser than water. Vapors heavier than air. Used as a solvent and fungicide for fruit.